131819453 has 2 divisors, whose sum is σ = 131819454. Its totient is φ = 131819452.

The previous prime is 131819449. The next prime is 131819461. The reversal of 131819453 is 354918131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86081284 + 45738169 = 9278^2 + 6763^2 .

It is a cyclic number.

It is not a de Polignac number, because 131819453 - 2² = 131819449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131819423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65909726 + 65909727.

It is an arithmetic number, because the mean of its divisors is an integer number (65909727).

Almost surely, 2^131819453 is an apocalyptic number.

It is an amenable number.

131819453 is a deficient number, since it is larger than the sum of its proper divisors (1).

131819453 is an equidigital number, since it uses as much as digits as its factorization.

131819453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 131819453 is about 11481.2653048347. The cubic root of 131819453 is about 508.9320893955.

The spelling of 131819453 in words is "one hundred thirty-one million, eight hundred nineteen thousand, four hundred fifty-three".